Across
- 3. The existence of a substance harmful for an environment
- 6. A type of energy which exists because of protons and neutrons
- 7. Color which symbolizes the healthy living environment
- 8. Greta Thundberg fights against the changes of this topic
- 9. The diversity of flora and fauna found in a given place
- 10. A branch of biology which concerns the interactions between animals and their environment
Down
- 1. Energy produced through mechanical, electrical or other ways
- 2. A system of interacting organisms in an environment
- 4. The conditions of existing for all living things
- 5. Ability for a resource to grow again after it dies out